JP5435250B2 - Image display device - Google Patents

Description

  The present invention relates to an image display device that processes image data to provide information or perform a service, and more particularly to an image display device that uses a mirror function and a mirror-type display having an image display function.

  A user regularly stands in front of a mirror such as a washbasin and checks his / her face color and posture to check daily health management and physical condition. At this time, it is desired to obtain objective information about his / her health condition instead of subjective judgment. Thus, as a related technique, an image display device has been proposed in which an image of a person's face or whole body is picked up by a camera and displayed on a display element, and at the same time, information on a health condition obtained by measurement or calculation is displayed.

  The following examples are known as documents of such image display devices.

  The wash basin type display device described in Patent Document 1 displays various types of information including a user's video and health management information on the mirror part of the wash basin. This device displays information on the physical condition of the user that is automatically measured in advance without any particular awareness, especially during the daily behavior of the user.

  FIG. 13 is a diagram showing a wash basin type display device described in Patent Document 1. As shown in FIG.

  Displayed in front by a half mirror 111 disposed in front of the wash basin 101, a video camera 112 installed on the back of the half mirror 111 so as to photograph the user 113 in front of the wash basin 101, and the half mirror 111 And a monitor 114 arranged as described above. The monitor 114 displays at least an image from the image processing device 115 that synthesizes the video taken by the video camera 112 and the health management information data. The user 113 can see the image of the monitor 114 through the protective glass 110.

  On the other hand, the face color measuring device described in Patent Document 2 measures a change value of the face color to be used as a guideline for health management or the like.

This facial color measuring device has a CCD camera unit and an operation display unit having a screen. The operation display unit displays an image of the subject sampled by the CCD camera unit, and has a function as a “mirror”. Based on the collected image data, the health indicator value of the defined facial color or “normal” , “Caution” can be displayed.
JP 2002-183315 A JP 2004-8632 A

  In the wash basin type display device as described in Patent Document 1, standing in front of the mirror of the wash basin, in that it can know its own image and health management information data during the daily actions of the user, Convenient. However, this sink type display device is a part of a large-scale health management system, and health management information data is measured by sensors in the system, and is obtained by processing and analyzing captured images. is not.

  Further, the face color measuring apparatus as described in Patent Document 2 is observation by a fixed point camera, and image correction and processing are easy. However, both the current image and the past image of the user are not included in the user's vision, and it is difficult to grasp the health condition.

  Therefore, it is convenient to automatically compare and collate face image data and body image data taken by a camera or the like with previously accumulated image data and display the current image and the past image. That is, by comparing the past figure with the present figure, it is possible to obtain such information that the complexion is worse than usual, the posture is worse, and the weight is more than half a year ago.

  An object of the present invention is to easily grasp a change in the appearance of a target person by displaying the current image and past image of the target person (user) on an appropriate area on a mirror-type display. .

In order to solve the above problems, an image display device according to a first aspect of the present invention includes an image input unit that captures image data of a subject, an image data storage unit that stores the image data, and a mirror display. In the display device, the mirror-type display includes an image display unit that displays a current image of a person to be faced, and an information display unit that displays information including at least a past image obtained from the image data. Both the current image and the past image are entered into the visual perception of the subject, and the past image is stored in the current image data captured by the image input unit and the image data storage unit. the past image data stored comparison verification analysis, Ri past image der selected from the difference information, the information display section, extracted from the current image data captured by the image input unit Wherein analyzing the current appearance characteristics of the subject, and displaying a label information assigned to the feature that matches the current appearance characteristics of the subject that.
In order to solve the above problems, a second image display device of the present invention includes an image input unit that captures image data of a subject, an image data storage unit that stores the image data, and a mirror display. The mirror-type display includes an image display unit that displays a current image of a person to be faced, and an information display unit that displays information including at least a past image obtained from the image data. And both the current image and the past image enter the visual sense of the subject, and the past image is extracted from the current image data captured by the image input unit. The comparison between the current appearance characteristics of the person and the past appearance characteristics of the target person extracted from the past image data stored in the image data storage unit is obtained as a result of the analysis. It is a past image selected from difference information between the current appearance feature of the subject and the past appearance feature of the subject, and the information display unit is a difference feature of the appearance feature that matches the difference information. The label information attached to is displayed.
In order to solve the above problems, a third image display device of the present invention includes an image input unit that captures image data of a subject, an image data storage unit that stores the image data, and a mirror display. The mirror-type display includes an image display unit that displays a current image of a person to be faced, and an information display unit that displays information including at least a past image obtained from the image data. And both the current image and the past image enter the visual sense of the subject, and the past image is extracted from the current image data captured by the image input unit. The comparison between the current appearance characteristics of the person and the past appearance characteristics of the target person extracted from the past image data stored in the image data storage unit is obtained as a result of the analysis. A past image selected from difference information between the current appearance characteristics of the subject and historical appearance characteristics of the subject,
The mirror display includes a mirror body and a screen, and the current image of the image display unit is displayed by reflecting an image of a subject on the mirror body, and the information of the information display unit is The information on the screen is reflected by the mirror and displayed.

  According to the present invention, since both the current image and the past image in the face of the subject are included in the subject's vision by the mirror-type display, the change in appearance can be easily grasped.

  In general, humans use mirrors on a daily basis when washing their faces, brushing their teeth, or checking their clothes. In many cases, these operations are performed at approximately the same time or at substantially the same standing position.

  Therefore, it is possible to naturally acquire face image data and body image data when a human uses a mirror without particularly burdening the user. In addition, the acquired image data is often image data when the user is facing the mirror or image data that is the same posing even when the user is not facing the mirror. For this reason, the user's face-to-face image data is similar to the stored image data in terms of the user's face, body size, angle, brightness, etc., and can be naturally performed without burdening the user. Under this, high-precision comparison and analysis are possible. In the present invention, when a user uses a display having a function as a mirror and a function for displaying an image as a normal mirror, a service is provided for processing image data and providing information.

  In addition to outputting the results of analyzing image data not only with text and voice, but also presenting it to the user with images and graphics, it is very meaningful to use a display that functions as a mirror. Is also very effective in this respect. In other words, if you try to perform the same image processing service during normal computer work, it will have the same effect in that you can obtain fixed-point image data, but when you are looking at the display, you are basically working on something, Displaying on that display is in the way. On the other hand, the main purpose of mirrors is to reflect themselves, and there are many cases where the mirror is a particularly unnecessary area other than the mirror image of the person being watched. Since such an empty area can be used, it is possible to output a detailed image analysis result without disturbing the user.

  For example, when the empty area is small, the determination of how to display is performed such that the result is displayed small, or the overlapping range is displayed as small as possible. In addition, as a display effect, it is possible to change the background color or make it translucent so that the region where the result is displayed is easy to see.

  The image display device of the present invention has an input device such as a camera and a mirror-type display which is a display having a mirror function and a video display function as an output device, and a past image acquired from the input device is faced by a subject. Display on the appropriate area on the mirror display with the current image inside. For example, this mirror-type display is used as a mirror in a general home, and a camera or the like as an image data input device is installed so as to focus on a user who uses the mirror-type display.

  Next, the best mode for carrying out the present invention will be described in detail as Embodiments 1 and 2 with reference to the drawings.

[Embodiment 1]
FIG. 1 is a block diagram showing a configuration of Embodiment 1 for carrying out the present invention.

  FIG. 2 is a flowchart of Embodiment 1 for carrying out the present invention.

  Referring to FIG. 1, the image display apparatus according to the present embodiment captures and inputs user image data with a camera or the like, an image input unit 1, a control unit 2, an operation input unit 3, and input image data. An image processing unit 4 for extracting a predetermined region from the image, an image analysis unit 5 for analyzing the extracted person image data, an image database 6, an image output unit 7 for outputting an image analysis result to the predetermined region, and an analysis A mirror-type display 8 for displaying the result is provided.

  The operation input unit 3 is an input unit by which a user issues various operation commands to the control unit 2.

  The image database 6 is an image data storage unit in which image data output from the image processing unit 4 is stored together with label information.

  The image processing unit 4 performs a process of extracting a predetermined area on the input image data given from the image input unit 1 and outputs the extracted image data.

  The image analysis unit 5 performs comparison / collation analysis on the extracted image data output from the image processing unit 4 with predetermined past image data stored in the image database 6, and the image data in the comparison / collation analysis processing is analyzed. The difference information is output as an analysis result.

  The mirror-type display 8 includes an image display unit and an information display unit, and displays the current image of the person (user) to face on the image display unit. The image output unit 7 is output from the image analysis unit 5. The past image selected from the analysis result is displayed on the information display unit. The selected past image is, for example, a past image having the largest difference.

  Specific modes of the mirror-type display 8 and the camera that is the image input unit 1 of the image display apparatus according to the present embodiment will be described.

  Assume that the user stands in front of a mirror-type display to check his appearance. At this time, a camera that captures a person standing in front of the mirror-type display acquires user image data. The camera can be installed at any position as long as it can shoot the user viewing the mirror display from almost the front. For example, if the camera is installed near the upper right corner of the mirror display, It is possible to acquire image information from the upper right of the person. Moreover, it is also possible to acquire image information from directly in front of the user by providing a mirror-type display with a function as a half mirror and installing a camera directly behind the mirror display.

  FIG. 3 is a diagram illustrating an example of a configuration of a mirror-type display.

  In FIG. 3A, the mirror type display 8 has a thin film display element 12 that can display electronic information on a mirror body 11. The thin film display element 12 is light transmissive and may be attached to a part of the mirror body 11. The image of the user who faces is reflected by the mirror body 11 and the current image is displayed. At the same time, past images are displayed on the display element 12. That is, the mirror 11 corresponds to an image display unit that displays a current image, and the thin film display element 12 corresponds to an information display unit that displays as a past image output from the image output unit 7.

  The mirror body 11 is an opaque example, and the camera as the image input unit 1 is installed around the mirror-type display 8, for example, above.

  FIG. 3B shows an example in which the mirror and the thin film display element are translucent and translucent. The camera 1 serving as an image input unit is installed directly behind the mirror-type display 8.

  FIG. 4 is a diagram illustrating another example of the configuration of the mirror-type display.

  In FIG. 4A, the mirror type display 8 includes a mirror body 21 and a screen 31. The screen 31 may be configured as shown in FIG. 5A, but may be other known display means. The image of the user who faces is reflected on the mirror body 21 to display the current image. At the same time, past images on the screen 31 at a position away from the mirror body 21 are reflected by the mirror body 21 and displayed. That is, the mirror body 21 corresponds to an image display unit that displays a current image, and the screen 31 corresponds to an information display unit that is displayed as a past image output from the image output unit 7. The user can perceive the result as a reflection image of the mirror. In this case, the area to be output can be calculated in consideration of the user's viewpoint / line of sight and the distance between the mirror body 21 and the screen 31. The mirror body 21 is an opaque example, and the camera that is the image input unit 1 is installed around the mirror display 8, for example, above.

  FIG. 4B shows an example of a half-mirror whose mirror body is light transmissive, and the camera 1 as an image input unit is installed directly behind the mirror-type display 8. Past images on the screen 31 on the back side of the mirror body 21 are displayed through the mirror body 21.

  FIG. 5 is a diagram illustrating another example of the configuration of the mirror-type display.

  5A, the mirror-type display 8 is entirely configured as a screen 43, and a thin film display element 42 capable of displaying electronic information is attached on the entire surface of a substrate 41. The current image of the user facing the user is input by the image input unit 1 and displayed on the thin film display element 42 having a function of a mirror in a pseudo manner. The past image output from the image output unit 7 is also displayed by the thin film display element 42. That is, the image display unit and the information display unit correspond to the common screen 43.

  FIG. 5B shows an example in which the substrate and the thin film display element are translucent and translucent. The camera that is the image input unit 1 is installed directly behind the mirror-type display 8.

  Next, the operation of the image display apparatus of this embodiment will be described in detail with reference to the flowchart of FIG.

  First, the user stands in front of the mirror-type display 8 for the purpose of use as a mirror. Image data including the user is input by the image input unit 1 (step S1). A predetermined area is extracted from the input image data by the image processing unit 4 (step S2). The extracted image data is stored and stored in the image database 6 (step S3). Apart from step S3, the image analysis unit 5 compares and analyzes the image data extracted by the image processing unit 4 and the image data stored in the image database 6, and outputs the difference information as an analysis result. (Step S4). The image output unit 7 displays the analysis result as a past image on the information display unit, which is a predetermined area of the mirror display 8 (step S5).

  Hereinafter, step S1 to step S5 will be described in detail.

  FIG. 6 is a diagram illustrating an example of input image data from the front.

  FIG. 7 is a diagram illustrating an example of image data obtained by extracting a face area.

  The image processing unit 4 extracts a predetermined area from the input image data. As the extracted area, for example, a face area, a whole body area, and the like are extracted only from the user's area from image data, a specific image size is extracted from a certain screen position, or extracted in a specific form. It is also possible. The area can be extracted, for example, by extracting the face area mainly by using the skin color template information or the like.

  FIG. 8 is a diagram for explaining a comparison / collation process between the current image data and the past image data stored in the image database.

  In the present embodiment, the image data extracted by the image processing unit 4 is stored as past image data in an image database with label information attached. As label information, an ID for identifying a user, time information, and the like can be considered. By using such label information, it is not compared with all past image data accumulated, but is compared with past image data to which predetermined label information is assigned. For example, the comparison is made with an image of the same person one year ago.

  The user ID can be automatically processed by measuring the degree of similarity with a registered image to which a user ID has already been assigned, and using the user ID assigned to the image data having the highest degree of similarity. In addition, personal authentication by external input such as RFID, fingerprint or voiceprint is also possible.

  Further, the time information may be given by adding the time information when the image is input.

  The image analysis unit 5 performs comparison and collation processing with the image data extracted by the image processing unit 4 and predetermined past image data stored in the image database, and outputs the label information as an analysis result. For example, the comparison is made with the past image data of one day ago, one week ago, one month ago, and one year ago, and the difference information is output as the analysis result. At that time, it is conceivable to select the image data having the largest difference, select the label information, and output it.

  FIG. 9 is a diagram showing a state in which both the current image and the past image are displayed on the mirror-type display.

  The selected past image is displayed near the face image reflected in the mirror.

  When the user uses a mirror, the area other than himself is often an unnecessary space. Therefore, for example, if the image is displayed on the face extracted by the image processing unit 7 or an area that does not overlap the body (an area next to the face, etc.), the image can be displayed without disturbing the user.

  The image output unit 7 displays past images on the information display unit, but determines in which area of the mirror display 8 to display. When displaying a past image, it may be displayed in an area that does not overlap the current face image, or conversely, if displayed so as to overlap the face image, the difference may be easier to see. Thereby, for example, the user can determine at a glance how thick or thin the weight is in one year.

  In addition, when the user moves during the analysis result display, it may be possible to dynamically determine the display area and move the display result.

[Embodiment 2]
In the present embodiment, the configuration of the mirror-type display is the same as the configuration shown in FIGS.

  FIG. 10 is a block diagram showing a configuration of the second embodiment for carrying out the present invention.

  FIG. 11 is a flowchart of Embodiment 2 for carrying out the present invention.

  Referring to FIG. 10, the image display apparatus according to the present embodiment has an analysis knowledge base 9 in addition to the configuration of the first embodiment shown in FIG. The present embodiment is different from the first embodiment in that the image analysis unit 5 analyzes both input image data using the image database 6 and the analysis knowledge base 9 and outputs the analysis result.

  In the analysis knowledge base 9, the characteristics of the image data necessary for analyzing the image data are stored in advance with the label information attached, and the characteristics of the difference information of the image data are the label information. Is stored in advance in a state of being assigned.

  The image analysis unit 5 refers to the extracted image data output from the image processing unit 4 with reference to the characteristics of the image data stored in the analysis knowledge base 9 and analyzes whether or not the characteristics correspond to the characteristics. The label information given to the feature of the corresponding image data is output as the analysis result. Further, difference information is obtained as a result of the comparison and collation analysis between the extracted image data output from the image processing unit 4 and predetermined past image data stored in the image database 6. With respect to the difference information, the feature of the difference information of the image data stored in the analysis knowledge base 9 is referred to, and whether or not it corresponds to the feature is also analyzed. The assigned label information is output as an analysis result.

  The image output unit 7 displays the analysis result output from the image analysis unit 5 on an information display unit that is a predetermined area of the mirror-type display 8.

  The mirror-type display 8 includes an image display unit and an information display unit, and displays a current image of the facing user on the image display unit. The image output unit 7 displays the analysis result output from the image analysis unit 4 in the past. The image is displayed on the information display unit. This is the same as in the first embodiment. In the present embodiment, the current image data is further analyzed, and the label information given to the feature and the label information given to the feature of the difference information are also displayed on the information display unit.

  Next, the operation of the image display apparatus of this embodiment will be described in detail with reference to the flowchart of FIG.

  First, the user stands in front of the mirror-type display 8 for the purpose of use as a mirror. Image data including the user is input by the image input unit 1 (step S1). A predetermined area is extracted from the input image data by the image processing unit 4 (step S2). The extracted image data is stored and stored in the image database 6 (step S3).

  The image analysis unit 5 receives the image data extracted by the image processing unit 4 and refers to the knowledge base 9 for analysis, and outputs the label information given to the feature corresponding to the image data as an analysis result (step) S5). Further, the image analysis unit 5 compares and analyzes the image data extracted by the image processing unit 4 and the image data stored in the image database 6 to obtain difference information (step S4). Further, the image analysis unit 5 receives the difference information of the image data obtained in step S4 as an input, refers to the analysis knowledge base 9, and outputs the label information given to the feature corresponding to the difference information as the analysis result. (Step S6). The image output unit 7 displays the past image that is the analysis result of step S4 and the label information that is the analysis result of step S5 and step S6 on the information display unit that is a predetermined region of the mirror display 8 (step S7). ).

  FIG. 12 is a diagram showing a state in which both the current image and the past image are displayed on the mirror-type display, and the result of analyzing the current image data and the result of analyzing the difference information are displayed as label information. .

  Regarding the result of analyzing the current image data, the character string of the analysis result is displayed outside the face area, and an arrow is displayed in the face area.

  The analysis knowledge base 9 includes, for example, “the lower stomach is overweight → obesity”, “the tooth has a black portion → cavities”, “the black portion under the eye → the bear is made, and sleep is insufficient” The feature of the image data and its label information are registered in advance in association with each other. Features of image data are mainly registered so that health conditions and signs of disease can be judged by appearance features, and the name of the feature (eg, abdomen) as label information Its health condition and disease name (obesity) are mainly registered.

  With this processing, for example, an analysis result such as “I can bear” is output for image data in which the eyes are darkened. In addition, if you store the corresponding advice information as a label at the same time, such as “Let's go to bed early”, the advice can be output as the analysis result, and the advice can be finally presented to the user. It is. For example, in the case of analysis of a face image, the image data can be identified by using the color information of the part, the face template, or the like to specify the image position of a specific part such as an eye or a mouth. If the position of the eyes is specified when the face area is extracted by the unit 4, the information may be used. In addition, by displaying an arrow or a circle in a region where the characteristics of the disease in the user's face region can be seen, a more easily understandable result display method is possible.

  Extracted image data obtained by performing analysis processing on the current image may also be displayed.

  On the other hand, the result of analyzing the difference information is also displayed. In the analysis knowledge base 9, in addition to the image feature data to which the label information is assigned, the feature data of the difference information of the image data is stored with the label information added. For example, data such as “the area around the face has increased by about 10 cm compared to a year ago → becomes overweight and needs to be dietary restricted” can be considered.

  As a result, not only the past image data with a large difference is output as in the first embodiment, but also the state of the difference and the health effect of the difference. It can be presented to the user.

  The result of the comparison with the image of one year ago and the result of analysis as fat as a result is displayed. The display position is placed next to the user's face so that it can be easily judged.

  Analyzed results are displayed as, for example, “I got a little bit more than a year ago”, “I was overweight”, “I was thin overall”, “I was taller”, “I got worse” To do. In addition, streaks may be added to the cheeks of the image one year ago to indicate that cheeks are fat.

  As described above, the result of analyzing the current image data and the result of analyzing the difference information are displayed, but it is also possible not to display one of them.

  Although the present embodiment has been described with respect to outputting a result on a mirror-type display, not only the result is displayed on a mirror-type display that the user is looking at, but also the analysis result can be output as a voice. It is also possible to store the information in a server so that the result can be referred to from another information device, or to send the analysis result to an information device owned by a specialist such as a doctor, a family, a boss, or the like.

  The image display device of the present invention can be applied to a washstand in a house that is used everyday.

The block diagram which shows the structure in Embodiment 1 of this invention. Similarly, the flowchart which shows the operation | movement in Embodiment 1. The figure which shows an example of a structure of a mirror type display The figure which shows the other example of a structure of a mirror type display The figure which shows the other example of a structure of a mirror type display The figure which shows the example of the image data from the front inputted The figure which shows the example of the image data which extracted the face area | region The figure explaining the comparison collation process of the present image data and the past image data stored in the image database The figure which shows the state which displayed both the present picture and the past picture on the mirror type display The block diagram which shows the structure of Embodiment 2 of this invention. Similarly, a flowchart showing the operation of the second embodiment. The figure which shows the state which displayed both the present image and the past image on the mirror type display, and also displayed the result of analyzing the current image data and the result of analyzing the difference information as the label information. The figure which shows the wash-stand type display apparatus described in patent document 1

Explanation of symbols

1. Image input unit (camera)
DESCRIPTION OF SYMBOLS 2 ... Control part 3 ... Operation input part 4 ... Image processing part 5 ... Image analysis part 6 ... Image database 7 ... Image output part 8 ... Mirror type display 11 ... Mirror 12 ... Display element 21 ... Mirror 31 ... Screen 41 ... Substrate 42 ... Display element 43 ... Screen

Claims (11)

An image display device comprising an image input unit that captures image data of a subject, an image data storage unit that stores the image data, and a mirror-type display,
The mirror-type display has an image display unit that displays a current image of a person to be faced, and an information display unit that displays information including at least a past image obtained from the image data.
Both the current image and the past image are adapted to enter the subject's vision,
The past image is extracted from the current appearance feature of the subject extracted from the current image data captured by the image input unit and the past image data stored in the image data storage unit. The past image selected from the difference information between the current appearance feature of the subject and the past appearance feature of the subject obtained as a result of the comparison and analysis of the past appearance feature of the subject And
The information display unit analyzes a current appearance feature of the subject extracted from the current image data captured by the image input unit, and is given to a feature that matches the current appearance feature of the subject. images display you and displaying the label information. Label information wherein given to analyze said current image data, according to claim characterized in that it is a text information about the contents to be noted on the information or health care shows a portion of an image to be noted on the health care 1 The image display device described in 1. The image display device according to claim 1 or 2 , wherein the label information attached to the feature by analyzing the current image data captured by the image input unit is displayed as a sound. The image display apparatus according to claim 1 or 2 , wherein the label information attached to the feature by analyzing the current image data captured by the image input unit is transmitted remotely. An image display device comprising an image input unit that captures image data of a subject, an image data storage unit that stores the image data, and a mirror-type display,
The mirror-type display has an image display unit that displays a current image of a person to be faced, and an information display unit that displays information including at least a past image obtained from the image data.
Both the current image and the past image are adapted to enter the subject's vision,
The past image is extracted from the current appearance feature of the subject extracted from the current image data captured by the image input unit and the past image data stored in the image data storage unit. The past image selected from the difference information between the current appearance feature of the subject and the past appearance feature of the subject obtained as a result of the comparison and analysis of the past appearance feature of the subject And
Wherein the information display unit, the difference information with the images display you and displaying the label information assigned to the feature of difference between the appearance characteristic matching. 6. The image according to claim 5 , wherein the label information given to the feature of the difference information is information indicating a part of an image to be noted in health management or text information on contents to be noted in health management. Display device. An image display device comprising an image input unit that captures image data of a subject, an image data storage unit that stores the image data, and a mirror-type display,
The mirror-type display has an image display unit that displays a current image of a person to be faced, and an information display unit that displays information including at least a past image obtained from the image data.
Both the current image and the past image are adapted to enter the subject's vision,
The past image is extracted from the current appearance feature of the subject extracted from the current image data captured by the image input unit and the past image data stored in the image data storage unit. The past image selected from the difference information between the current appearance feature of the subject and the past appearance feature of the subject obtained as a result of the comparison and analysis of the past appearance feature of the subject And
The mirror display includes a mirror body and a screen, and the current image of the image display unit is displayed by reflecting an image of a subject on the mirror body, and the information of the information display unit is , images display you characterized in that the information on the screen is displayed is reflected by the mirror body. The current image data and the past image data to be compared and collated analysis, image display apparatus according to any one of claims 1 to 7, characterized in that the image data extracted in a predetermined area. The said information display part displays the said past image in the area | region which does not overlap with the subject's present image currently displayed on the said image display part, The any one of Claim 1 thru | or 8 characterized by the above-mentioned. The image display device described in 1. The said information display part displays the said past image so that it may overlap with the subject's present image currently displayed on the said image display part, The any one of Claim 1 thru | or 8 characterized by the above-mentioned. The image display device described. Washbasin, characterized in that it comprises an image display device according to any one of claims 1 to 1 0.

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